This setup , known as a conoscope , is shown in figure 14 . 2 and consists of two stress - free plano - convex lenses a and b 此装置称为锥光镜，如图14 2所示，它由a和b两个无应力平凸透镜组成。
2.
This setup , known as a conoscope , is shown in figure 14 . 2 and consists of two stress - free plane - convex lenses a and b and a diaphragm c having a small aperture 此装置称为锥光镜，如图14 2所示，它由a和b两个无应力平凸透镜和一个带小孔的光阑c组成。
3.
Crystal optical characteristics of transparent minerals appeared in these systems of monopolarizer , crossed polarizer and conoscope will be observed and explained with the fundamentals of crystal 观察并用晶体光学的基本原理解释单偏光系统、正交偏光系统、锥光系统下透明矿物的晶体光学特征。
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